637838-L21 HP Intel Xeon E5645 2.40GHz 6-Core Processor
637838-L21 Overview
Part number 637838-L21 identifies the 637838-L21 HP Intel Xeon E5645 2.40GHz 6-Core Processor, a server processor for compatible hardware platforms. The supplied product data records model: E5645; cores: 6; threads: 12; base clock: 2.40 GHz; L3 cache: 12 MB.
Use the complete part number when comparing this item with the component already installed in the target system. The listed socket is LGA1366. Quote or compatibility enquiries should reference 637838-L21. Pricing is available by quotation; include the part number and required quantity in the enquiry. The source specification lists the condition as OEM.
Description
637838-L21 HP Intel Xeon E5645 2.40GHz 6-Core Processor Product Details
Part number 637838-L21 identifies the 637838-L21 HP Intel Xeon E5645 2.40GHz 6-Core Processor, a server processor for compatible hardware platforms. The supplied product data records model: E5645; cores: 6; threads: 12; base clock: 2.40 GHz; L3 cache: 12 MB.
Key Specifications
| Specification | Product Data |
|---|---|
| Part Number | 637838-L21 |
| Listing Brand | HP |
| Product Type | Server Processor |
| Catalog Category | HPE CPU |
| Processor Type | Server |
| Series | Xeon Processor |
| Model | E5645 |
| Code Name | Westmere EP |
| Core Stepping | B1 |
| Manufacturing Process | 32 NM |
| CPU Id String | 206C2 |
| Cores | 6 |
| Threads | 12 |
| Base Clock | 2.40 GHz |
| L3 Cache | 12 MB |
| Front Side Bus / QPI | 5.86 GT/S |
| Thermal Design Power | 80 Watts |
| Vid Voltage Range | 0.750V-1.350V |
| Socket | LGA1366 |
| Condition | OEM |
Compatibility and Selection Guidance
Use the complete part number when comparing this item with the component already installed in the target system. The listed socket is LGA1366. Quote or compatibility enquiries should reference 637838-L21.
- Match the full part number with the supported hardware list for the target system.
- Verify socket, generation, firmware or BIOS support and thermal design power.
- Confirm whether the supplied item is a processor only or an upgrade kit with additional hardware.
Ordering Information
Pricing is available by quotation; include the part number and required quantity in the enquiry. The source specification lists the condition as OEM. Use 637838-L21 on the quotation request so the exact item can be checked.
Product images are for reference. Verify the part number, technical specifications, compatibility, supplied condition and included components before purchase.

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